A printer as a medium processing apparatus includes a transport path through which a paper being transported passes, a recording head that records on the paper on the transport path, and a platen that forms at least a portion of the transport path as a path forming member with which the paper comes into contact, in which a surface resistance value of the path forming member changes according to an applied voltage of the medium.

A printer includes two supporters disposed at a storage section, an adjuster movably supporting at least a specific supporter of the two supporters, a protrusion protruding upward from a second section, the second section being an upper portion of the specific supporter, a locking section locking a first section in a position to which the first section is moved via the adjuster, the first section being a lower portion of the specific supporter, and an engagement section having elastically-deformable engagement pieces arranged at intervals in a particular direction intersecting a vertical direction, the protrusion being configured to, when the cover is closed, engage with at least a specific engagement piece from beneath, the specific engagement piece being maintained elastically deformed upward.

A printer includes two supporters disposed at a storage section, an adjuster movably supporting at least a specific supporter of the two supporters, a protrusion protruding upward from a second section, the second section being an upper portion of the specific supporter, a locking section locking a first section in a position to which the first section is moved via the adjuster, the first section being a lower portion of the specific supporter, and an engagement section having elastically-deformable engagement pieces arranged at intervals in a particular direction intersecting a vertical direction, the protrusion being configured to, when the cover is closed, engage with at least a specific engagement piece from beneath, the specific engagement piece being maintained elastically deformed upward.

Formation of a plurality of wear visibility grooves 10 has been focused. An elastic roller includes: an inner layer side elastic material 4; a coating layer 5 disposed on an outer periphery of the inner layer side elastic material 4, the coating layer configured to make contact with the belt-shaped member; and a plurality of wear visibility grooves 10 (11, 12, 13) formed on an inner side of the coating layer 5 and formed on a surface of the inner layer side elastic material 4 in a circumferential direction, the plurality of wear visibility grooves being successively formed in an axial direction of the roller shaft, wherein at least two grooves of the plurality of wear visibility grooves have different heights, and filler is filled in the plurality of wear visibility grooves 10, the filler having a color different from that of the inner layer side elastic material 4 and different from that of the coating layer 5, and material of the filler is the same as that of the coating layer 5.

Formation of a plurality of wear visibility grooves 10 has been focused. An elastic roller includes: an inner layer side elastic material 4; a coating layer 5 disposed on an outer periphery of the inner layer side elastic material 4, the coating layer configured to make contact with the belt-shaped member; and a plurality of wear visibility grooves 10 (11, 12, 13) formed on an inner side of the coating layer 5 and formed on a surface of the inner layer side elastic material 4 in a circumferential direction, the plurality of wear visibility grooves being successively formed in an axial direction of the roller shaft, wherein at least two grooves of the plurality of wear visibility grooves have different heights, and filler is filled in the plurality of wear visibility grooves 10, the filler having a color different from that of the inner layer side elastic material 4 and different from that of the coating layer 5, and material of the filler is the same as that of the coating layer 5.

Convex portions formed on a sheet of paper by a forming section are maintained in a favorable condition and good recording quality is obtained.

Convex portions formed on a sheet of paper by a forming section are maintained in a favorable condition and good recording quality is obtained.

A coater includes a coating device and a rotator. The coating device is configured to apply a coating liquid on a sheet material. The rotator is configured to contact a coated surface of the sheet material to which the coating liquid is applied in the coating device. The rotator has a plurality of fine particles on a circumferential surface of the rotator.

A coater includes a coating device and a rotator. The coating device is configured to apply a coating liquid on a sheet material. The rotator is configured to contact a coated surface of the sheet material to which the coating liquid is applied in the coating device. The rotator has a plurality of fine particles on a circumferential surface of the rotator.

A thermal printer according to an embodiment includes: a platen that has a rotatable columnar shape and that is configured to convey a print medium having various widths, with a central portion in a direction of a rotary shaft as a reference, in a manner of being in contact with an outer peripheral portion; and a print head that is oppositely disposed along the platen, that is pressed by the outer peripheral portion, and that is configured to perform printing by applying heat to the print medium. The platen includes a shaft constituting the rotary shaft and a rubber including the outer peripheral portion provided on an outer periphery of the shaft, and has a first region centered on the central portion and second regions on both outer sides in the direction of a rotary shaft with respect to the first region. A diameter of the platen in the first region and diameters of the platen in the second regions are the same, and a thickness of the rubber in the first region is smaller than thicknesses of the rubber in the second regions.